National Double Blade Pen Pocket Knife

This is a nice vintage double blade pen knife marked ".ATIONA. CUTLERY WORKS" on the .70" long blade, the other blade is 1.2" long. This knife is in good condition overall, with fairly sharp blades, and light pitting on the blades, firm locking blade positions, one blade appears to be missing a small amount on the tip end of the blade. The bolsters appear to be silver, or maybe nickel plated. The handle material appears to be bone, and is in very good condition, with an attractive variegated coloring. A very nice small knife from the early 1900's 1930's era!